AIM: To determine multifocal visual evoked potential (mVEP) in the prediction of postoperative visual acuity in cataract. METHODS: We examined 30 normal eyes as control and 60 eyes of 52 cataract patients, senile cataract in 27 cases 30 eyes, cataract with glaucoma in 25 cases 30 eyes by mVEP examination. All patients underwent phacoemulsifi-cation (Phaco) and intraocular lens (IOL) implantation. After surgery,best corrected visual acuity (BCVA) was examined at 1 week, 1 month, and 3 months respectively.RESULTS: The mean amplitude and latency in mVEP responses between normal control group were 183±11nV, 95±8ms, and in senile cataract group were 177±10nV, 96± 8ms respectively, there were no significant difference between two groups (P>0.05). The mean amplitude and latency of cataract with glaucoma 138±7nV, 99±6ms were significantly different comparing to both control and senile cataract group (P0.05);合并青光眼的白内障组平均主波振幅和潜伏期分别是138±7nV、99±6ms,与正常对照组及老年性白内障组均存在显著性差异(P0.05);而术后BCVA<0.3者,眼底视功能检查有明显改变(术后检查证实),其mVEP中心位点主波振幅221±6nV,潜伏期105±7ms,与正常对照组差异显著(P<0.05).结论:白内障术前mVEP振幅和潜伏期的改变可用来客观判断眼底视功能损害及预测术后视力.术前mVEP正常者高度提示术后视力预后良好,而mVEP检查结果变化显著,提示伴有眼底视功能损害,术后BCVA差.因此术前mVEP检查可作为预测白内障术后视力的一种有效、客观的检查方法.
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